View in EDS HTML Full Text PDF Full Text

Synthesis and Evaluation of Ceramic‐Anchored Cu‐Ce‐MnOx Catalyst for Low Temperature Reduction of Diesel Engine NOx Emissions Using Liquefied Petroleum Gas or Adblue as Reductants.

Saved in:
Bibliographic Details
Title: Synthesis and Evaluation of Ceramic‐Anchored Cu‐Ce‐MnOx Catalyst for Low Temperature Reduction of Diesel Engine NOx Emissions Using Liquefied Petroleum Gas or Adblue as Reductants.
Authors: Obita, Brian O.1 (AUTHOR) obita.brian@students.tukenya.ac.ke, Mbugua, Simon Ngigi1 (AUTHOR), Muhanji, Clare I.1 (AUTHOR), Lalah, Joseph O.1 (AUTHOR)
Source: Energy Science & Engineering. Jul2026, Vol. 14 Issue 7, p3149-3161. 13p.
Subject Terms: *Liquefied petroleum gas, *Reducing agents, *Diesel automobile emissions, *Abatement (Atmospheric chemistry), *Manganese catalysts, *Catalysts, *Catalysis
Abstract: Manganese oxide‐based catalyst doped with copper and cerium was synthesized through microwave irradiation and successfully anchored on a ceramic support. Fourier Transform Infrared Radiation study showed Mn‐O bond at 529 cm−1 while X‐ray Fluorescence confirmed the availability of Cu, Ce and Mn in the ceramic matrix. Examination by SEM revealed active sites in addition to the catalyst aggregate particle size diameter as 707 mm. Energy Dispersive X‐ray established the presence of copper, cerium and manganese after catalyst synthesis. Catalytic effect of Cu‐Ce‐MnOx was studied using liquefied petroleum gas as the hydrocarbon reductant and performance comparison was made with NH3, a commonly used reductant from AdBlue solution. Sulfur dioxide poisoning resistance, hydrothermal stability and low temperature activity (< 50°C) were the critical parameters investigated by having Cu‐Ce‐MnOx catalyst placed after the water‐cooling unit. The parameters were optimized by testing Cu‐Ce‐MnOx catalyst at 3, 6, and 9 kg engine loads to reflect the expected real driving NOx emission reduction potential of the catalyst. NOx reduction efficiency was 26% at 28°C for LPG‐Cu‐Ce‐MnOx and 60% at 29°C for NH3‐Cu‐Ce‐MnOx. White biuret deposits were observed around the injection point due to low temperature decomposition of AdBlue solution. Biuret would lower the catalytic activity by clogging hence reduced number of catalyst active sites. This work successfully shows that this ceramic anchored Cu‐Ce‐MnOx catalyst has a potential application at almost room temperature NOx reduction. The anchored catalyst has the potential for integration in Diesel automobile exhaust, though it has a lower NOx conversion efficiency with LPG, compared to the conventional AdBlue. [ABSTRACT FROM AUTHOR]
Database: Energy & Power Source
Full text is not displayed to guests.
FullText Links:
  – Type: pdflink
Text:
  Availability: 1
Header DbId: enr
DbLabel: Energy & Power Source
An: 195314118
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
IllustrationInfo
Items – Name: Title
  Label: Title
  Group: Ti
  Data: Synthesis and Evaluation of Ceramic‐Anchored Cu‐Ce‐MnO&lt;subscript&gt;x&lt;/subscript&gt; Catalyst for Low Temperature Reduction of Diesel Engine NO&lt;subscript&gt;x&lt;/subscript&gt; Emissions Using Liquefied Petroleum Gas or Adblue as Reductants.
– Name: Author
  Label: Authors
  Group: Au
  Data: &lt;searchLink fieldCode=&quot;AR&quot; term=&quot;%22Obita%2C+Brian+O%2E%22&quot;&gt;Obita, Brian O.&lt;/searchLink&gt;&lt;relatesTo&gt;1&lt;/relatesTo&gt; (AUTHOR)&lt;i&gt; obita.brian@students.tukenya.ac.ke&lt;/i&gt;&lt;br /&gt;&lt;searchLink fieldCode=&quot;AR&quot; term=&quot;%22Mbugua%2C+Simon+Ngigi%22&quot;&gt;Mbugua, Simon Ngigi&lt;/searchLink&gt;&lt;relatesTo&gt;1&lt;/relatesTo&gt; (AUTHOR)&lt;br /&gt;&lt;searchLink fieldCode=&quot;AR&quot; term=&quot;%22Muhanji%2C+Clare+I%2E%22&quot;&gt;Muhanji, Clare I.&lt;/searchLink&gt;&lt;relatesTo&gt;1&lt;/relatesTo&gt; (AUTHOR)&lt;br /&gt;&lt;searchLink fieldCode=&quot;AR&quot; term=&quot;%22Lalah%2C+Joseph+O%2E%22&quot;&gt;Lalah, Joseph O.&lt;/searchLink&gt;&lt;relatesTo&gt;1&lt;/relatesTo&gt; (AUTHOR)
– Name: TitleSource
  Label: Source
  Group: Src
  Data: &lt;searchLink fieldCode=&quot;JN&quot; term=&quot;%22Energy+Science+%26+Engineering%22&quot;&gt;Energy Science &amp; Engineering&lt;/searchLink&gt;. Jul2026, Vol. 14 Issue 7, p3149-3161. 13p.
– Name: Subject
  Label: Subject Terms
  Group: Su
  Data: *&lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22Liquefied+petroleum+gas%22&quot;&gt;Liquefied petroleum gas&lt;/searchLink&gt;&lt;br /&gt;*&lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22Reducing+agents%22&quot;&gt;Reducing agents&lt;/searchLink&gt;&lt;br /&gt;*&lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22Diesel+automobile+emissions%22&quot;&gt;Diesel automobile emissions&lt;/searchLink&gt;&lt;br /&gt;*&lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22Abatement+%28Atmospheric+chemistry%29%22&quot;&gt;Abatement (Atmospheric chemistry)&lt;/searchLink&gt;&lt;br /&gt;*&lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22Manganese+catalysts%22&quot;&gt;Manganese catalysts&lt;/searchLink&gt;&lt;br /&gt;*&lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22Catalysts%22&quot;&gt;Catalysts&lt;/searchLink&gt;&lt;br /&gt;*&lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22Catalysis%22&quot;&gt;Catalysis&lt;/searchLink&gt;
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Manganese oxide‐based catalyst doped with copper and cerium was synthesized through microwave irradiation and successfully anchored on a ceramic support. Fourier Transform Infrared Radiation study showed Mn‐O bond at 529 cm−1 while X‐ray Fluorescence confirmed the availability of Cu, Ce and Mn in the ceramic matrix. Examination by SEM revealed active sites in addition to the catalyst aggregate particle size diameter as 707 mm. Energy Dispersive X‐ray established the presence of copper, cerium and manganese after catalyst synthesis. Catalytic effect of Cu‐Ce‐MnOx was studied using liquefied petroleum gas as the hydrocarbon reductant and performance comparison was made with NH3, a commonly used reductant from AdBlue solution. Sulfur dioxide poisoning resistance, hydrothermal stability and low temperature activity (&lt; 50&#176;C) were the critical parameters investigated by having Cu‐Ce‐MnOx catalyst placed after the water‐cooling unit. The parameters were optimized by testing Cu‐Ce‐MnOx catalyst at 3, 6, and 9 kg engine loads to reflect the expected real driving NOx emission reduction potential of the catalyst. NOx reduction efficiency was 26% at 28&#176;C for LPG‐Cu‐Ce‐MnOx and 60% at 29&#176;C for NH3‐Cu‐Ce‐MnOx. White biuret deposits were observed around the injection point due to low temperature decomposition of AdBlue solution. Biuret would lower the catalytic activity by clogging hence reduced number of catalyst active sites. This work successfully shows that this ceramic anchored Cu‐Ce‐MnOx catalyst has a potential application at almost room temperature NOx reduction. The anchored catalyst has the potential for integration in Diesel automobile exhaust, though it has a lower NOx conversion efficiency with LPG, compared to the conventional AdBlue. [ABSTRACT FROM AUTHOR]
PLink https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=enr&AN=195314118
RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1002/ese3.70522
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 13
        StartPage: 3149
    Subjects:
      – SubjectFull: Liquefied petroleum gas
        Type: general
      – SubjectFull: Reducing agents
        Type: general
      – SubjectFull: Diesel automobile emissions
        Type: general
      – SubjectFull: Abatement (Atmospheric chemistry)
        Type: general
      – SubjectFull: Manganese catalysts
        Type: general
      – SubjectFull: Catalysts
        Type: general
      – SubjectFull: Catalysis
        Type: general
    Titles:
      – TitleFull: Synthesis and Evaluation of Ceramic‐Anchored Cu‐Ce‐MnOx Catalyst for Low Temperature Reduction of Diesel Engine NOx Emissions Using Liquefied Petroleum Gas or Adblue as Reductants.
        Type: main
  BibRelationships:
    HasContributorRelationships:
      – PersonEntity:
          Name:
            NameFull: Obita, Brian O.
      – PersonEntity:
          Name:
            NameFull: Mbugua, Simon Ngigi
      – PersonEntity:
          Name:
            NameFull: Muhanji, Clare I.
      – PersonEntity:
          Name:
            NameFull: Lalah, Joseph O.
    IsPartOfRelationships:
      – BibEntity:
          Dates:
            – D: 01
              M: 07
              Text: Jul2026
              Type: published
              Y: 2026
          Identifiers:
            – Type: issn-print
              Value: 20500505
          Numbering:
            – Type: volume
              Value: 14
            – Type: issue
              Value: 7
          Titles:
            – TitleFull: Energy Science & Engineering
              Type: main
ResultId 1